These pictures are of a  Hexagonaria anna  (Whitfield, 1973) coral fossil. It was found in the Bell Shale of the Traverse Group of Alpena, ...

While working in the lobby at work I noticed what appears to be a tree fossil imprint in a sandstone block. The building was built over 50 y...

  This image created by Doctor Elvira Wood and published in 1920 in The Appendages, Anatomy, and Relationships of Trilobites by Percy E. R...